mod_proxy_http): Information disclosure due improper management of back end server connection close within error handling
Published Aug 22, 2012
4.3
MEDIUMCVSS 2.0
EPSS 9.63%
Description
The proxy functionality in (1) mod_proxy_ajp.c in the mod_proxy_ajp module and (2) mod_proxy_http.c in the mod_proxy_http module in the Apache HTTP Server 2.4.x before 2.4.3 does not properly determine the situations that require closing a back-end connection, which allows remote attackers to obtain sensitive information in opportunistic circumstances by reading a response that was intended for a different client.
Affected products
No data.
- 2.4.0
- 2.4.1
- 2.4.2
No data.
Red Hat Enterprise Linux 5
httpd
Not affected
Red Hat Enterprise Linux 6
httpd
Not affected
Red Hat JBoss Enterprise Web Server 1
httpd
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | httpd | Not affected | n/a |
| Red Hat Enterprise Linux 6 | httpd | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | httpd | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of httpd as shipped with Red Hat Enterprise Linux 4, 5, and 6, JBoss Enterprise Web Server 1, and JBoss Enterprise Application Server 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 9.63% (0.09632) | 95.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.24% (0.10238) | 95.07th | v5 (v2026.06.15) |
| Mar 30, 2025 | 4.44% (0.04442) | 88.00th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.22% (0.07218) | 85.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.44% (0.04442) | 88.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00262) | 66.40th | v3 (v2023.03.01) |
| May 21, 2024 | 0.26% (0.00262) | 65.81th | v3 (v2023.03.01) |
| Dec 21, 2023 | 0.26% (0.00262) | 63.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.26% (0.00259) | 61.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.39% (0.06394) | 90.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.39% (0.06394) | 90.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.39% (0.06394) | 77.96th | v2 (v2022.01.01) |
References (21)
- http://httpd.apache.org/security/vulnerabilities_24.html x_refsource_CONFIRMVendor Advisory
- http://mail-archives.apache.org/mod_mbox/www-announce/201208.mbox/%3C0BFFEA9B-801B-4BAA-9534-56F640268E30%40apache.org%3E mailing-listx_refsource_MLIST
- http://www.apache.org/dist/httpd/CHANGES_2.4.3 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/55131 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-3502 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=850776 Issue Tracking
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r05b5357d1f6bd106f41541ee7d87aafe3f5ea4dc3e9bde5ce09baff8%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r1d201e3da31a2c8aa870c8314623caef7debd74a13d0f25205e26f15%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r9b4b963760a3cb5a4a70c902f325c6c0337fe51d5b8570416f8f8729%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2012-3502
- https://www.cve.org/CVERecord?id=CVE-2012-3502
Change history (0)
No recorded changes yet.